/*************************************************************************
 * Copyright 2008 David Almilli
 *  
 * Licensed under the Apache License, Version 2.0 (the "License"); 
 * you may not use this file except in compliance with the License. 
 * You may obtain a copy of the License at 
 *  
 *     http://www.apache.org/licenses/LICENSE-2.0 
 *      
 * Unless required by applicable law or agreed to in writing, software 
 * distributed under the License is distributed on an "AS IS" BASIS, 
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
 * See the License for the specific language governing permissions and 
 * limitations under the License.
 **************************************************************************/
package com.almilli.catnip.beacon;

import java.util.Hashtable;
import javax.naming.Context;
import javax.naming.Name;
import javax.naming.RefAddr;
import javax.naming.Reference;
import javax.naming.spi.ObjectFactory;

/**
 * The <code>TiVoBeaconFactory</code> class is an ObjectFactory that will create a TiVoBeacon
 * implementation. It accepts the "interfaces" attribute to tell the beacon which network
 * interfaces to listen on.  This is a comma separated list of IP addresses.
 * @author s2kdave
 */
public class TiVoBeaconFactory implements ObjectFactory {

    @SuppressWarnings("unchecked")
	public Object getObjectInstance(Object obj, Name name, Context nameCtx, Hashtable environment) {
        // We only know how to deal with <code>javax.naming.Reference</code>s
        // that specify a class name of TiVoBeacon
        if (obj == null || !(obj instanceof Reference)) {
            return null;
        }
        Reference ref = (Reference) obj;
        if (!TiVoBeacon.class.getName().equals(ref.getClassName())) {
            return null;
        }
        
        StandardTiVoBeacon beacon = new StandardTiVoBeacon();
        RefAddr ra = ref.get("interfaces");
        if (ra != null) {
            beacon.setInterfaces(ra.getContent().toString().split("\\s*,\\s"));
        }
        beacon.start();
		return beacon;
	}

}
